Watch



J. GORDON.

Watch.

No. 27,281. Patented Feb. 28,- 1860.

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UNITED STATES PATENT OFFICE.

JOHN GORDON, OF NEYV LONDON, CONNECTICUT.

WATCH.

Specification of Letters Patent No.

To all whom it may concern:

Be it known that I, JOHN GORDON, of New London, in the county of NewLondon and State of Connecticut, have invented a new and usefulImprovement in Vatches; and I do hereby declare that the following is afull, clear, and eXact description of the same, reference being had tothe accompanying drawings, forming part of this specification, in which-Figure l, is a face view of a watch movement with my invention applied.Fig. 2, is a back view of the same. Fig. 3, is a central section of thesame.

Similar letters of reference indicate corresponding parts in the severalfigures.

To enable others skilled in the art to ap ply my invention I willproceed to describe its construction and operation.

a, is the hair spring applied in the usual manner.

Z), is the curb lever applied on the exterior of cock A, in a well knownmanner and having the curb pins 0, attached and applied to the hairspring in the usual way.

(Z, is the toothed segment made in one piece or otherwise permanentlyattached to the curb lever and having its pitch line concentric with thefulcrum of the curb lever and staff of the balance.

6, is the pinion which gears with the segment, and f, its arbor passingright through the dial the potence plate and the cock A; and g, is thehand attached to the said arbor outside of the dial B, where a circularre cess h, is provided for it that it may not stand up above the face ofthe dial. Around the margin of this recess 72,, is a circular scalewhich is graduated in the following manner.

' WVhen the watch is completed and thoroughly adjusted to run on meantime, I

27,281, dated February 28, 1860.

place the hand g, on the arbor f, of the pinion and secure it so that itstands straight up toward the figure 0, which is marked on the circledescribed around the arbor. I then move the hand around half the circlein either direction and ascertain how many seconds the watch gains orloses in an hour and mark the number of seconds opposite to the figure0, and divide each half of the circle into that number of equal parts,and after this the watch may be at any time regulated by turning thehand g, in either direction, toward fast or slow, as many divisions ofthe circle as the watch gains or loses seconds in an hour. Theregulation is thus enabled to be effected positively with the greatestaccuracy without any ditliculty as the curb lever is moved almost imperceptibly with a very considerable movement of the hand g, and what is ofgreat importance this is done without opening the inner case and therebyexposing the works to dust and running the risk of breakage.

I do not claim broadly the attachment of a toothed segment to the curblever, but:

hat I claim as my invention and desire to secure by Letters Patent, is

The employment in combination with the elongated toothed curb lever (b)of the arbor f, when the said arbor passes through the dial, potenceplate and cook and is provided at one end with a pinion (e) which gearswith the teeth of the curb lever, and at the other end, with a hand .2,which moves over the surface of a recess h in the dial which recess hasa graduated scale, all as and for the purpose herein shown anddescribed.

JOHN GORDON. WVitnesses:

A. BRANDEGEE, F. C. LEONARD.

